The Ford Barn

fordor · 07-04-2018, 06:54 PM

I am going from cast iron heads to aluminum heads. I noticed that when pulling the heads there was silicon on the stud holes. Should I put rtv on the studs to prevent leaking? Anything else I need to do special besides the difference in torque settings that I need to do? This is a 60hp flathead.

Rustedjunk · 07-04-2018, 07:07 PM

Torque them to a 45 foot pounds. You'll wanna do that a couple of times after your flathead heating up to tempature. I say seven times just to make sure. As for a thread sealer I would recommend the Permatex 2.

Brian · 07-05-2018, 12:56 AM

Ensure the heads easily slip on and off before hand; straighten 'bent' head studs until the heads fit without binding. I then always liberally coat each and every stud with nickel based antiseize compound. This will certainly pay dividends in years to come when you wanna remove them.

Mac VP · 07-05-2018, 04:46 AM

Be careful on the torque setting. The factory spec was 50 lbs on cast iron heads and 30 lbs on aluminum heads. Be sure to use hardened steel washers under the nuts when going against aluminum heads.

fordor · 07-05-2018, 07:29 PM

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Thanks guys for your comments and suggestions. I appreciate it.

07-04-2018, 06:54 PM	#1
fordor Member Join Date: May 2010 Location: Michigan Posts: 87	Replacing head gasket I am going from cast iron heads to aluminum heads. I noticed that when pulling the heads there was silicon on the stud holes. Should I put rtv on the studs to prevent leaking? Anything else I need to do special besides the difference in torque settings that I need to do? This is a 60hp flathead.

07-04-2018, 07:07 PM	#2
Rustedjunk Senior Member Join Date: May 2016 Location: St. Paul, MN Posts: 302	Re: Replacing head gasket Torque them to a 45 foot pounds. You'll wanna do that a couple of times after your flathead heating up to tempature. I say seven times just to make sure. As for a thread sealer I would recommend the Permatex 2.

07-05-2018, 12:56 AM	#3
Brian Senior Member Join Date: May 2010 Location: Masterton, New Zealand Posts: 3,834	Re: Replacing head gasket Ensure the heads easily slip on and off before hand; straighten 'bent' head studs until the heads fit without binding. I then always liberally coat each and every stud with nickel based antiseize compound. This will certainly pay dividends in years to come when you wanna remove them. __________________ Unfortunately, two half wits don't make a whole wit!

07-05-2018, 04:46 AM	#4
Mac VP Senior Member Join Date: May 2010 Location: Cincinnati, OH Posts: 1,361	Re: Replacing head gasket Be careful on the torque setting. The factory spec was 50 lbs on cast iron heads and 30 lbs on aluminum heads. Be sure to use hardened steel washers under the nuts when going against aluminum heads. __________________ VANPELT SALES LLC Cincinnati, Ohio Office: 513-724-9486 www.vanpeltsales.com www.classictransmission.com

07-05-2018, 07:29 PM	#5
fordor Member Join Date: May 2010 Location: Michigan Posts: 87	Re: Replacing head gasket Sponsored Links (Register now to hide all advertisements) Thanks guys for your comments and suggestions. I appreciate it.